Predictive typing in JTextField

Question

Hi All
I am currently working on A GUI Swing interface.
I want to create a textfield that could process predictive typing.
For example, I have a vector of strings (allowed words to type in). As soon as the user starts entering some characters into the text field, my program should check for existing words in the vector starting with the same characters entered by the user. Then, it could set the text in the text field with the existing word or pop up a window with all the available words starting with these characters and give the user the choice.
Any idea how I could start implementing this? Any help would be greatly appreciated.

Answer 1

Many thanks armalcom for your reply.
I tried your suggestion, but I have some problems.
It seems that when the user types a key, the keyTyped method is called but the getText() method returns the text before the user typed.
Example: if the textfield was empty before and the user types "h", the getText() method returns an empty string. If the user types "e" after the "h", the getText() method returns "h" and so on. Does anyone have any idea how to solve this? I tried the keyReleased method but still it does not work.
Below is my code:
     JFrame frame=new JFrame("Test");
     final JTextField txtField= new JTextField();
     txtField.addKeyListener(new KeyAdapter() {
          public void keyTyped(KeyEvent e)
              String gText=txtField.getText();
              String word;
              for(int i=0;i<values.size();i++) {
               word=(String) values.elementAt(i);
               if((word.indexOf(gText))!=-1) {
                   txtField.setText(word);
     frame.getContentPane().add(txtField);
     frame.setVisible(true);
     frame.pack();